TABLE 3

The proportion with a large weight gain in relation to ISPs by smoking and BMI at baseline

ISPs in the top quartile
NoneOneTwo or moreP for trend*P for trend
BMI <28 kg/m2 (n)1061618743
Large weight gain (%)22.126.526.80.010.03
 Nonsmokers19.6 (143/729)24.1 (77/319)22.5 (49/218)0.100.09
 Smokers27.4 (91/332)29.1 (87/299)28.6 (150/525)0.690.21
BMI ≥28 kg/m2 (n)140120139
Large weight gain (%)12.922.532.4<0.0010.002
 Nonsmokers10.9 (12/110)21.3 (16/75)32.1 (17/53)0.00080.01
 Smokers20.0 (6/30)24.4 (11/45)32.6 (28/86)0.0630.048
  • Data are % (n of n) unless otherwise indicated.

  • *

    * P for trend adjusted for age, follow-up time, weight at baseline, and height at baseline and follow-up.

  • Additionally adjusted for physical inactivity at baseline and follow-up, high alcohol consumption, and smoking at baseline and follow-up.